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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Common PowerQUICC II code.
- *
- * Author: Scott Wood <[email protected]>
- * Copyright (c) 2007 Freescale Semiconductor
- *
- * Based on code by Vitaly Bordug <[email protected]>
- * pq2_restart fix by Wade Farnsworth <[email protected]>
- * Copyright (c) 2006 MontaVista Software, Inc.
- */
- #include <linux/kprobes.h>
- #include <asm/cpm2.h>
- #include <asm/io.h>
- #include <asm/pci-bridge.h>
- #include <platforms/82xx/pq2.h>
- #define RMR_CSRE 0x00000001
- void __noreturn pq2_restart(char *cmd)
- {
- local_irq_disable();
- setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE);
- /* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */
- mtmsr(mfmsr() & ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR));
- in_8(&cpm2_immr->im_clkrst.res[0]);
- panic("Restart failed\n");
- }
- NOKPROBE_SYMBOL(pq2_restart)
- #ifdef CONFIG_PCI
- static int pq2_pci_exclude_device(struct pci_controller *hose,
- u_char bus, u8 devfn)
- {
- if (bus == 0 && PCI_SLOT(devfn) == 0)
- return PCIBIOS_DEVICE_NOT_FOUND;
- else
- return PCIBIOS_SUCCESSFUL;
- }
- static void __init pq2_pci_add_bridge(struct device_node *np)
- {
- struct pci_controller *hose;
- struct resource r;
- if (of_address_to_resource(np, 0, &r) || r.end - r.start < 0x10b)
- goto err;
- pci_add_flags(PCI_REASSIGN_ALL_BUS);
- hose = pcibios_alloc_controller(np);
- if (!hose)
- return;
- hose->dn = np;
- setup_indirect_pci(hose, r.start + 0x100, r.start + 0x104, 0);
- pci_process_bridge_OF_ranges(hose, np, 1);
- return;
- err:
- printk(KERN_ERR "No valid PCI reg property in device tree\n");
- }
- void __init pq2_init_pci(void)
- {
- struct device_node *np;
- ppc_md.pci_exclude_device = pq2_pci_exclude_device;
- for_each_compatible_node(np, NULL, "fsl,pq2-pci")
- pq2_pci_add_bridge(np);
- }
- #endif
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